com.yahoo.prelude.semantics.rule

Class ConditionReference

java.lang.Object

com.yahoo.prelude.semantics.rule.Condition

com.yahoo.prelude.semantics.rule.ConditionReference

public class ConditionReference
extends Condition

A reference to a named condition

Author:

bratseth

Nested Class Summary

Nested classes/interfaces inherited from class com.yahoo.prelude.semantics.rule.Condition

Condition.Anchor

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	automataLookup True if this condition should be looked up in the automata annotations of the item instead of by reference to another item
private String	conditionName The name of the referenced rule
private NamedCondition	namedCondition The actual condition references by this, or null if not initialized or not found, or if this is really an automata reference

Constructor Summary

Constructors

Constructor and Description
ConditionReference(String conditionName)
ConditionReference(String label, String conditionName)

Method Summary

Modifier and Type	Method and Description
private boolean	automataMatch(RuleEvaluation e)
private boolean	automataMatchPhrase(PhraseMatcher.Phrase phrase, RuleEvaluation e)
boolean	doesMatch(RuleEvaluation e) Returns whether this condition matches the given evaluation at the current location of the evaluation.
String	getConditionName() Returns the name of the referenced rule, never null
protected boolean	hasOpenChoicepoint(RuleEvaluation e) Returns whether there is an open choice in this or any of its subconditions.
protected boolean	isDefaultContextName()
void	makeReferences(RuleBase ruleBase) Override if references needs to be set in this condition of its children
void	setConditionName(String name)
protected String	toInnerString() All instances of this produces a parseable string output

Methods inherited from class com.yahoo.prelude.semantics.rule.Condition

getAnchor, getContextName, getLabel, getLabelString, getMatchInfo, getMatchInfoString, getNameSpace, getParent, isReferable, labelMatches, labelMatches, matches, matchesEndAnchor, matchesStartAnchor, postMatchHook, preMatchHook, setAnchor, setContextName, setLabel, setNameSpace, setParent, toString, traceResult

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

conditionName

private String conditionName

The name of the referenced rule

namedCondition

private NamedCondition namedCondition

The actual condition references by this, or null if not initialized or not found, or if this is really an automata reference

automataLookup

private boolean automataLookup

True if this condition should be looked up in the automata annotations of the item instead of by reference to another item

Constructor Detail

ConditionReference

public ConditionReference(String conditionName)

ConditionReference

public ConditionReference(String label,
                          String conditionName)

Method Detail

getConditionName

public String getConditionName()

Returns the name of the referenced rule, never null

setConditionName

public void setConditionName(String name)

doesMatch

public boolean doesMatch(RuleEvaluation e)

Description copied from class: Condition

Returns whether this condition matches the given evaluation at the current location of the evaluation. If there is a match, the evaluation must be advanced to the location beyond the matching item(s) before this method returns.

Specified by:

doesMatch in class Condition

automataMatch

private boolean automataMatch(RuleEvaluation e)

automataMatchPhrase

private boolean automataMatchPhrase(PhraseMatcher.Phrase phrase,
                                    RuleEvaluation e)

makeReferences

public void makeReferences(RuleBase ruleBase)

Description copied from class: Condition

Override if references needs to be set in this condition of its children

Overrides:

makeReferences in class Condition

hasOpenChoicepoint

protected boolean hasOpenChoicepoint(RuleEvaluation e)

Description copied from class: Condition

Returns whether there is an open choice in this or any of its subconditions. Returns false by default, must be overriden by conditions which may generate choices open accross multiple calls to matches, or contain such conditions.

Overrides:

hasOpenChoicepoint in class Condition

isDefaultContextName

protected boolean isDefaultContextName()

Overrides:

isDefaultContextName in class Condition

toInnerString

protected String toInnerString()

Description copied from class: Condition

All instances of this produces a parseable string output

Specified by:

toInnerString in class Condition